Most colleges and universities will NOT ALLOW you to do that AT THE SAME TIME.. My closest friend triple majored, but at two DIFFERENT colleges at TWO different universities. i don't think anyone at one university "officially" knew she was going to the other university, and she was a part time student at the other university.
For most people triple majoring is prescription for a mental break down. My friend manged it , kind of, but i do NOT think she got all three bachelors degrees in the SAME semester. . She double majored in physics and music history, which started as music piano performance. Two hour and half to 2 hour senior recitals plus trying to get into medical school was too much even for her, so it became a music history major at almost the last possible time. There was no B.S. degree program in music.. She was admitted to double doctorate program in medical school. She decided NOT to get the Ph.D..
I am alive and kicking today because of her.
I have 3 bachelors degrees too, but I did NOT double or triple major i did my bachelor's degrees serially graduating in 1975, 1980 and 1994. There's a reason for the 14 year gap. i dropped out of graduate school for 7 YEARS. after an attempted masters degree, everything EXCEPT the thesis. I did filed work for the thesis... I DID go back to graduate school and i DID get master's degree..
Instead of triple majoring. double major and if you want to get a second or third bachelor's degree, you MIGHT be abole to do that, but NOT necessarily at the SAME COLLEGE or university.. There are or were several members of Congress who have moth M.S and Jl.D. Degrees. Yes, you CAN do double master's degrees, but you have to take certain amount of courses for one master's degree before you can start taking courses for the master's degree or law degree...
HOW are you going to PAY the tuition. Lots of Astronauts have had Ph.Ds or M.Ds.. i mean civilian astronauts.
If you want to have mental break down, fine try triple majoring, but i think you are going to find out that no college or university will allow you to do that.